Species of the Genus Allpes. 95 



Museum, is very fairly accurate, and from which it appears 

 that the laminate expansions of the anal tibia are larger even 

 than in crotalus, so that the height of this segment at its 

 distal end measured from angle to angle is nearly equal to its 

 median lengtli. Lucas, moreover, describes his specimen as 

 having the dorsal surface very obsoletely granulate ; but the 

 value of this statement depends upon whether or not the 

 descrlber was personally acquainted with the granulation of 

 other species of the genus. 



Alipes appendiculatus^ sp. n. 



Colour a dull olive-green, antennae and legs yellow ; head 

 tinted with ochre. 



Head a little wider than long (5:4|), semielliptical, 

 sparsely punctured, and weakly bi-impressed. 



Antennce moderately long, composed of 17 or 18 segments, 

 whereof the basal three are naked and the rest pubescent ; the 

 apical not longer than the penultimate. 



MaxilUpedes also sparsely punctured ; coxal plate marked 

 in front with a median abbreviated sulcus and two obliquely 

 transverse lateral sulci ; precoxal plates of medium size, sepa- 

 rated, each armed with 4 conical teeth ; femoral tooth strong. 



Terga. — First and second smooth or spicular, sparsely 

 punctured ; third to twenty-first covered with spicules, which 

 increase in quantity towards the hinder end of the body, also 

 carinate, the anterior ones less strongly than the middle and 

 posterior, though on the fifth the seven longitudinal crests 

 are distinctly visible, the crests placed as follows : — one 

 median, two sutural (one for each longitudinal sulcus), two 

 marginal — that is, the normal marginal elevation, — and two, 

 one on each side between the marginal and sutural, of irregular 

 shape and formed by a fusion of tubercles; on the fifth, 

 seventh, eighth, tenth, twelfth, fourteenth, sixteenth, and 

 eighteenth, but indistinct on the anterior and posterior of 

 these, there is an oblique crest on each side passing anteriorly 

 from the marginal to the sutural ; in the middle and posterior 

 part of the body the marginal crest is notched, so as to be 

 almost bitubercular at its hinder end; the sutural crests 

 increase in strength towards the hinder end, terminating on 

 the twentieth segment in an upstanding tubercle ; the median 

 crest only a little narrower and lower than the sutural crests 

 in the middle of the body; the lateral crests become gradually 

 obsolete posteriorly and are scarcely visible on the twentieth. 



Sterna smooth, sparsely punctured, marked with three 

 obsolete impressions, two lateral and one posterior median. 



