588 t>ti Malcolm la trie on 



converge slightly towaxds the front and the anterior margin is comparatively straight. 

 The eyes are well marked and oval in form, placed about equidistant from the lateral 

 and anterior margins. There is a curious curved line arising from the posterior end of 

 the eye (fig. 28). The body segments increase in length and decrease in breadth from 

 before backwards, and are not marked by any special characters except the fine and 

 sharply-cut granular markings. There appears to be no prolongation back of the pos- 

 terior angles of any of the segments. 



The telson is powerful in proportion to the animal, with a triangular section. The 

 ridge which is on the dorsal surface is expanded at the proximal end (fig. 29) and forms 

 a triangular, flattened area. 



Only traces of the appendages are preserved, but the last pair seem to have been 

 expanded. 



This form differs from E. lanceolatus in the shape of the carapace and eyes and 

 the squareness of the posterior segments which are conical in lanceolatus. The form of 

 carapace and position of the eyes recall the arrangement in E. Fischeri (13) and its 

 allies, but the eyes are more oval in form and the last body segment is not lobed. 



Bembycosoma, gen. nov. 



Carapace shaped like the ace of clubs, breadth greater than length, body conical 

 short ; telson stout. 



It is with much hesitation that I create this genus for the reception of an obscure 

 form of which a number of mostly fragmentary specimens have come to light. My hesita- 

 tion is not so much due to any doubt of the generic value of the form, but to the absence 

 of sufficient information to supply a satisfactory diagnosis. Insufficiently described genera 

 are the greatest curse of systematic zoology, and I should be sorry to add to their num- 

 ber. The one species known is : — 



B. pomphicus, n. sp. (PI. V., figs. 31 and 32.) 



Characters, those of the genus and in addition a warty texture of skin. The cuticle 

 was from its state of preservation thin and delicate, and the exact outlines are difficult 

 to make out in many parts. The trilobed form of the carapace is only shown in one 

 specimen (fig. 31), the others having a well-defined semi-circular form (fig. 32). The 

 semi-circular outline of the carapace can be seen in the type specimen, and I am inclined 

 to think that this is the true shape of the edge ; and that the lateral lobes are due to the 

 flattening of dorso-lateral protuberances of the carapace. No trace of eyes has been made 

 out, and though some obscure markings in some specimens probably indicate the gnatho 

 bases, I have not been able to interpret them. Any sign of limbs beyond the carapaa 

 is wanting. 



The body tapers evenly clown to the whole way and the telson continues the same 



