2 Transactions of the Society. 



It is evident that Ehrenberg himself acted on the principle 

 that matters had been so much confused, especially in this group 

 of Eotatoria, that he was obliged to pass over without considera- 

 tion much of the work of his predecessors. 



Tins confusion, however, does not affect us much in the matter 

 of the Diaschiza, for most of the species are of later date. We 

 only want to point out that chaos has reigned in Eurculariadom. 



At last Gosse, discovering more accurate detail of lorica, in- 

 vented a new genus Diaschiza, in which he placed valga, exigua,. 

 semiaperta, Hoodii, pccta, and temiior. Of these, all were new to 

 science except semiaperta and pasta. The first is most evidently 

 Furcidaria gibba of Ehrenberg ; the second, Gosse's own F. cceca r 

 At one time, seeing the dorsal cleft, Gosse re-names them Diaschiza 

 semiaperta and pccta ; at another time, failing to observe the cleft, 

 he calls them Furcularia gibba and cccca. Of these species, gibba, 

 being the first Ehrenberg described, will serve well as the type 

 species of the genus Diaschiza ; and in future will stand as Diaschiza 

 gibba. 



Hence it is not without precedent that we are dissatisfied with 

 the name Eurcularia ; and, thinking the name Diaschiza more de- 

 scriptive of this section of the old genus Eurcularia, we have no 

 hesitation in taking those Furcularise which satisfy the demands 

 of this genus, and establishing the genus on a sound basis as what 

 may be in future described as Diaschiza (Gosse). This will give 

 students a homogeneous genus, and enable them to identify such 

 of the Notommatadre as fall within its limits. 



Generis Charact. — Diaschiza are Notommatadse with the in- 

 tegument of the trunk slightly stiffened into four plates, two sub- 

 dorsal and two subventral, and with the dorsal and two lateral! 

 clefts between these plates strongly marked ; also with a bunch 

 of stiff setee projecting from the foot just above the base of the 

 toes. 



There are three divisions of the genus : — I. With frontal eye. 

 II. With cervical eye. III. Without eye. 



The following is a list of the fourteen species of this genus 

 which we have been able to observe. One of these, No. 8 (fig. 13),. 

 and the males of Nos. 1, 4, and 7 (figs. 1, 4, and 5), are here de- 

 scribed for the first time. No. 14 has, however, a very uncertain 

 claim for its position here. 



I. WITH FRONTAL EYE. 



1. Diaschiza gibba Ehrbg. Greatest size ^ in. (282 ll) A. 



2. „ globata Gosse „ %ho * n - (127 ll) K. 



3. „ sterea Gosse „ t £q in. (181 fx) F. 



4. „ gracilis Ehrenberg „ T j q in. (149 ll) H» 



