388 CRUSTACEA. 



Plate 24, fig. 9 a, b, different varieties, enlarged ; c, exterior max- 

 illiped ; d, abdomen of male. 



From the shores of the Bay of Islands, New Zealand. 



Length, two to three lines. Colour various ; often greenish black, 

 or black and white in irregular areas, or wholly dirty white or gray- 

 ish, mottled with brown. 



The lobed front occupies the whole space between the eyes, and 

 the middle lobe is most projecting. The two antero-lateral teeth 

 are like those of Hymenosorna. The abdomen narrows from the 

 second segment (which is very short), to the penult (narrowing more 

 especially in the fourth segment), is then linear through the penult, 

 but tapers again in the last segment, which is somewhat oblong. The 

 legs are a little pubescent. The female abdomen is very broad and 

 inflated, covering the whole space between the legs. 



Figure 10, Plate 24, represents the abdomen of another specimen, 

 probably of the above species. As all the other characters observed 

 are those of the varius, we are not prepared to pronounce it distinct 

 on the characters derived from the abdomen, as this part varies so 

 much with growth. 



Hymenicus varius, DANA, Proc. Acad. Nat. Sci. Philad., 1851, v. 253. 

 Hymenicus Novi-Zealandiae, of the same place, is probably a variety of the varius. 



HYMENICUS PUBESCENS. 



Oarapax pubescens, ferme orbiculatus aut vix ovato-orbiculatus, postice 

 arcuatus, rostro parvulo simplicissimo, rotundato, et marginem pubes- 

 cente, margine carapacis omnino integro, inermi. Abdomen maris an- 

 gustum lineari-subtriangidatum, segmentis penultimo precedentibmqiie 

 duobus fere cequis, postice parce angustantibus, ultimo subtriangnlato, 

 paulo oblongo, obtuso. Pedes breviter pubescentes; antici mediocres, 

 sequentes tenues. 



Carapax pubescent, very nearly orbiculate or hardly ovato-orbiculate, 

 arcuate behind, beak small, quite simple, rounded, margin pubes- 



