Mollopliai/d of Our Native Jiirih. i'2:^ 



TlicsL' MIC called truboculac. All tlicsc si nu'dircs licrc iiaiiird arc s|M'(i(ic 

 cliaract(>i-s in the deterniinatimi of lice. 



There is a uniform number of hairs present in tlie tcm])oral and oecipital 

 margins. These hairs, as well as those of the prothorax, raetathorax and 

 abdomen are used as determining eharaeters. as their number is uniform. 

 Whenever these hairs seem to i>roject throush a elear space in the colored 

 chitinized parts of the in.'^ect. they are said to be itustulated. 



Differences in penera involve uxire than the aforenientioned fads. It 

 depends mainly on the shape of the body, the size (if the trabeculae. whether 

 movable to any marked degree : upon the size of the front as compared with 

 the occiput: the depth of the antennal fos.sa or ocular emargination, and 

 the size of the temporal margins or regions of the occiput, generally indi- 

 cated as swollen temporal regions. Another genus distinguishing character 

 is the similarity or dissimilarity of antennae in both sexes. There are 

 other differences in genera which will be noted in the accompanying key. 

 It is the key as revised and standardized by Kellogg from his New Mallo- 

 phaga I (1896) pages 61-62. 



Key to the Suborders. 



A. With filiform 3- or 5-segmented antennae, and no labial palpi. 



Suborder Ischnocera. 

 AA. With clavate or capitate 4-segmented antennae, and 4-segmented 

 labial palpi. Suborder Amblycera. 



Key to the Genera of the Suborder Ischnocera. 



A. With 3-segmented antennae: tarsi with 1 claw; infesting mammals 

 (family Trichodeetidae). Trichodectes X. 



AA. With 5-segmented antennae; tarsi with 2 claws; infesting birds (family 

 Philopteridae). 



B. Antennae similar in both sexes. 



C. Front deeply angularly notched. Akidoproctus P. 

 CC. Front convex, truncate, or rarely with a curbing emargination, 



bu t never angularly notched. 



D. Species broad and short, with large movable trabeculae (at the 

 anterior angle of antennary fossa). 



E. Forehead with a broad transverse membranous fiaj) i)ro- 



jeeting beyond lateral margins of the head in the male, ])arely 



projecting in female. Giebelia Kellogg. 



EE. Without such membranous flap. Docophorus X. 



DD. Species elongate, narrow; with very small or no trabecuhie. 



Xirmus X. 

 BB. Antennae diflfering in the two sexes. 



C Species ^^^de, with body elongate-ovate to suborbicular. 



D. Temporal margins rounded; last segment of abdomen roundly 

 emarginated; antennae of male without appendage, third seg- 

 ment very long. Eurymetopus Tasch. 



