INSECTA. 415 



Rhiacophila PICTET. 



Psychomia LATR. 



B. ft Maxillary palps (of males) with two to four joints. 



Sericostoma LATR. Maxillary palps in males mostly with two 

 joints, in some with three, dilated, villose externally, often veiling 

 the head. 



Sub-genera Pogonostoma EAMB., Dasystoma ejusd. : with maxillary palps 

 of males three-jointed. 



Sub-genera Trickostoma PICTET, Lasiostoina RAMB., Lepidostoma EAMB., 

 Sericostoma PICTET : with maxillary palps of males two-jointed. 



Phryganea PICTET. Maxillary palps of males four-jointed, of 

 females five-jointed, longer than labial, subpilose. Wings with 

 transverse nervures. 



Sub-genera LimnepkUa LEACH, Monocentra, Enoicyla, Oligotricha RAMBUR. 



Note. For other recorded genera see WESTWOOD, Generic Synopsis, pp. 

 49 51, and BURMEISTER, 1. 1. 



Sp. Phryganea grandis L., RCESEL, Ins. 11., Insect, aquatil. Cl. n. Tab. 

 xvni. ; DE GEER, M6m. ir. PI. 13, fig. i ; PTiryg. rJiombica L., (Linne- 

 phila LEACH) ; RCGSEL, ibid. Tab. xvi. ; GERMAR, Faun. Ins. Ewrop. Fasc. 

 ix. Tab. 13, &c. 



Family XXIX. Panorpatce. Posterior wings expanded. Man- 

 dibles distinct. Head with anterior process mostly rostriform ; 

 igula none ; labium and maxillae mostly connate at base. Maxillary 

 )alps five-jointed, labial two-jointed. Antennae filiform, long, mul- 

 iarticulate. 



A. Ocelli three frontal. Wings perfect, reticulate, with longi- 

 udinal nervures numerous, transverse few. 



Bittacus LATR. Feet elongate, slender, tarsi with single claw. 

 Abdomen cylindrical, long. (Habit of Tipula.) 



Sp. Bittacus tipularius, Panorpa tipularia FABR., C. DE VILLERS, Entomol. 

 Linnean. Tab. 7, fig. 1 1 ; SULZER, Gesch. der Ins., Tab. xxv. figs. 7, 8 ; 

 GUERIN, Icon., Ins. PI. 61, fig. 2, habitat in south of Europe. 



Panorpa L. (exclusive of P. hyemalis and God). Feet moderate, 

 tarsi with two claws, terminated by intermediate pulvillus. Abdo- 

 men of males with three posterior segments recurved, last oval, 

 globose, forcipate. 



Sp. Panorpa communis (and Pan. germanica} L., PANZER, Deutschl. Ins. 

 Heft 50, Tab. 10; DUMBRIL, Com. gen. s. I. Ins. PL 27, fig. 6. The 



