1902.] ON THE DRAGOKFLIES OF THE " SKEAT EXPEDITION." 381 



hitherto described species, but allied to several new species I have 

 seen. It has some affinity with aS'. amhitiosus B.-L., but has a 

 little fold in the hind edge of the first segment of the truncus : 

 the apex of the telson is quadrangular, not narrowed in the 

 middle, and the exopodite of the uropods scarcely visible. 



[I have slightly modified, or occasionally condensed, the 

 language of these descriptions kindly supplied me by M. Budde- 

 Lund.— W. F. L.] 



EXPLANATION OF THE PLATES. 

 Plate XXXIV. 

 Fig. 1. Diogenes desipiens (p. 366). Antennal region. 1 a. Left chela. 



2 Biogeiiesmixtus {p. d67). Antennal resrion. 2 a. Chela. 2 6. 3rd left leg, 

 3. Baianus amari/Uis dissimiUs {p. Sm). 3-3 a. Scutum. 3 6-e. Tergura. 

 i. Balanusceneas (p. 370). Prom above. 4 a. Scutum. 4 6. Tergum. 



Plate XXXV. 



Fig. 5. FlatyJepas opMopMlus (p. 371). From above. 5 a. From below. 5 6. A 



lateral compartment, seen from the inside. _ 



6. Dichelaspis occlusa {-p. 373). From the side. 6 a. Tergum. 6 6. Carma. 



6 c. Scutum. . , ^ ^ , m 



7. DicJielaspis equina (p. 375). Carina. 7a. Tergum, typical form. 7&-c. Iwo 



difl^rent forms of the tergum. 7 d. Scutum. 



8. Cymothoa pulchrum (p. 377). From above. 8 a. From the side. 



9. BocineU mundana (p. 378). From above. 9 a. Posterior leg. 

 10. Spharoma felix (p. 379). From above. 



4. On a Collection of Dragonflies made by the Members of 

 the " Skeat Expedition " in the Malay Peninsula in 

 1899-1900. By F. F. Laidlaw, B.A. 



[Received November 18, 1902.] 



Part II.' 



CCENAGRIONIN^. 



In dealing with the last of the subfamilies represented in this 

 collection, I have attempted as before to give a complete list of 

 species hitherto recorded from the Peninsula. This list will 

 shortly prove to be incomplete, for I have in my hands awaiting 

 examination a fine collection of Odonata, made by Mr. Annandale, 

 who has revisited the Peninsula; and, from a casual inspection of 

 his specimens, it is evident that it includes a number of species 

 which are, if not new to science, at any rate new to the Peninsula. 

 Further, I am informed by Dr. Foerster, to whom I am much 

 indebted for kind assistance and courtesy, that he has recently 

 received a large consignment of Odonata from the same locahty, 

 including new and remarkable forms. 



I venture to hope, however, that the present list may none the 

 less be of some service. 



I take the opportunity of correcting two or three errors, ot 

 which I find I have been guilty in the first part of this account. 

 1 Part I., see P. Z.S. 1902, i. p. 63. 



