70 THE BOTIFEEA. 



[I suspect the Distemma setigerum of Ehrenberg to belong to this genus. He himself 

 alludes to the liability of confounding it with Eattulus, as well as to the difficulty of 

 resolving the very slender toe, which, at first sight, seems single ; and to his inability 

 to see any proper foot-joint. Yet he assigns to the species two eyes ; which does not 

 accord with any true species of Coelopus known to me. P.H.G.] 



CffiLOPUS (?) MINUTUS, GoSSC, Sp. 110V. 



(PI. XX. fig. 20.) 



[SP. CH. Two eyes, wide apart; mastax and rotating cilia (apparently'] wanting ; 

 body rotund, minute. 



Little as I know of this tiny animal, enough is manifest to show that it is one of much 

 physiological interest. Though for convenience of reference, and because of certain 

 conspicuous resemblances, I place it with the Ccelopods, it must be considered a species 

 incertce sedis. The general figure, plump and round, recalls C. porcellus and cavia, and 

 so do the short, curved foot, thick at its base and tapering to a sharp point, and its 

 manner of articulation. Yet, whether the structure of this member is that peculiar to 

 Coelopus, a secondary spine lodged within the inferior concavity of the principal, I 

 cannot certainly affirm. I strove hard to determine this point, but could not obtain 

 absolute certitude. It appeared single and indivisible. 



But it is at the anterior extremity that the chief anomalies of the little creature are 

 found. Two cervical eyes are seen, tiny globelets, brilliant and distinct, set wide apart, 

 close within the outline on either side, in a dorsal aspect (fig. 20). I could find no 

 trace of mastax or trophi, in general so largely developed and so conspicuous in this 

 family ; but instead of it what seemed a simple slender duct or tube, formed by the union 

 of two short branches which communicate with the front, and open into a great sacculate 

 stomach ; as if the oesophagus had been continued upward, the mastax being atrophied, 

 to the very front, or rather merged into the buccal funnel. Again, with the closest 

 scrutiny I could detect no cilia nor any ciliary action. 



Only a solitary example has occurred to my observation, from the Black Loch, near 

 Dundee. It was alive but inert, and to a certain extent glued fast to the glass by an 

 excretion from the foot. P.H.G.] 



Length, jj ff inch. Habitat. Black Loch, near Dundee (P.H.G). 



Family XII. DINOCHARID^. 



Lorica entire, vase-shaped, or depressed; sometimes facetted, often spinous ; head 

 distinct, with a chitinous covering ; foot and toes often greatly developed; trophi 

 symmetrical. 



Of the three genera, which together form the Dinocharida, two, viz. Dinocharis and 

 Scaridium, resemble each other in the great length of the foot and toes, and in their 

 conspicuous condyles. Both these genera are also completely loricated ; but whereas 

 in Scaridium the chitiiious cuticle is thin, somewhat flexible, smooth, and transparent, 

 in Dinocharis it attains a greater development than in any other genus of the Eotifera. 

 For, not only is the trunk completely enclosed in a dense lorica shagreened with little 

 knobs, ornamented with ridged facets, or bristling with spines, but the head and foot 

 also are similarly protected, and the lorica stretches down even to the base of the toes. 

 The third genus, Stephanops, resembles the first two in having a chitiiious covering for 

 the head, and in bearing stiff spines, which are not organs of locomotion, on various 

 parts of the trunk ; but its skin can hardly be termed a lorica, and its foot, though 

 well-jointed and often spinous, is never immoderately long. The head-gear in the 



