120 Analytical Notices of Books, 



drical, slender and elongated, with a globular head, and the abdominal 

 horn short and rigid, or instead of the latter a specular mark ; typical 

 genera, Macroglossum and Sesia : 3. Larva with a head almost trian- 

 gular and acuminate above; body obliquely striated, generally with 

 yellow, naked and somewhat rugose ; abdominal horn of moderate size, 

 smooth; t3rpical genus, Smerinthus: 4. Larva with an ovate truncated 

 head; nearly naked and even on the surface; abdominal horn lengthened, 

 tuberculated, curved; typicdl genus, richer ontia : 5. Larva with a small 

 globose head; with large ocelli behind it, or with pale spots along the 

 sides of the body; abdominal horn generally simple; the typical exam- 

 ples are to be found in some of the species of the genera Sphinx, Och- 

 senh., socid Deilephila. 



Of Bomhycid(E the larvse, especially those of exotic species, are less 

 generally known ; their characters, asindicative of the stirpes are conse- 

 quently less defined, as presented to us in the work of Dr. Horsfield, 

 than those of the preceding tribe. The five principal forms are, 1. Fas- 

 cicuIafcB, generally covered closely with silky hairs, arranged in fascicles 

 or tufts often of unequal length on various parts of the body, and alwa5rs 

 abruptly terminated ; this stirps comprises two groups, one of which is 

 exemplified by the genus Laria, and the other by Arctia : 2. Verti- 

 eillatcB, in which the larva is either limaciform, (t}^pical genus, Apoda,) 

 or furnished^ with rigid spines, which are surrounded in a verticillate 

 manner by smaller very acute spines ; of these the genus Saturnia is 

 typical : 3. PHoscb, the most strongly pronounced form of the larvse 

 being elongated, soft, entirely covered with fine down; Lasiocampa 

 may be regarded as typical of this stirps : 4. Lignivorce, larva naked, 

 or with but few loosely scattered hairs ; typical genera, PygcEra, Cossus, 

 and Hepialus: 5. Cuspidatoe, larva exceedingly diversified in form, 

 but having one or more points or lengthened tubercles, either at the 

 extremity of the abdomen or on one of the segments of the body; 

 Cerura, J^otodonta, &c., are comprehended in this stirps. 



In the JVoctuidce the stirpes are also formed from the larvae, which 

 however are still more imperfectly known than those of the BombycidcE. 

 They are, in some respects provisionally, pointed out as, 1. Kudcs, larva 

 cylindrical, smooth, and naked, always obtuse behind, with a termination 

 either abrupt, or prominent and rounded; this form is typical of the 



